I think that Red Goblin should actually take CGRs place as the top cosmic officially.
I had a chance to play with them both for quite awhile and CGR just falls short almost everywhere I needed him.
First let’s look at damage:
Red goblins damage is actually quite crazy once you have 3 charges or he is in frenzy mode. There are plenty of solos in abyss with him.
They both finish fights roughly in the same time frame because CGR and RG have to use the SP3.
Let’s look at utility;
Red goblin is incinerate immune , can reduce spidey verse evades , anti miss, anti auto block , anti power burn. I have used everyone to get me out of trouble and tackle tricky node combinations. This is real content use. Modok , darkhawk, sixth sense etc.
Let’s look at practical uses.
Red goblin is just easier to use and more straight forward. You can have power gain as long as you need it, armor break, or incinerate as long as you need. Heck you can even have all 3 up.
CGR you have to activate combos and throw away utility so you can get the big payoff. When I think cosmic champs in general need more than just a big payoff.
Overall,
Red Goblin gets used pretty regularly whenever I can do some longer content with him, because of his simple rotation and everyday uses he ranks higher to me.